//
// Copyright 2022 The GUAC Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package guesser

import (
	"testing"

	"github.com/guacsec/guac/internal/testing/testdata"
	"github.com/guacsec/guac/pkg/handler/processor"
)

func Test_guessEncoding(t *testing.T) {
	tests := []struct {
		name         string
		doc          processor.Document
		wantErr      bool
		wantMimeType string
	}{
		{
			name: "valid .bz2 format document",
			doc: processor.Document{
				Blob:   []byte(testdata.CycloneDXBz2Example),
				Type:   processor.DocumentUnknown,
				Format: processor.FormatUnknown,
				SourceInformation: processor.SourceInformation{
					Collector: "a-collector",
					Source:    "a-source",
				},
			},
			wantErr:      false,
			wantMimeType: "application/x-bzip2",
		},
		{
			name: "valid .zst format document",
			doc: processor.Document{
				Blob:   []byte(testdata.CycloneDXZstdExample),
				Type:   processor.DocumentUnknown,
				Format: processor.FormatUnknown,
				SourceInformation: processor.SourceInformation{
					Collector: "a-collector",
					Source:    "a-source",
				},
			},
			wantErr:      false,
			wantMimeType: "application/zstd",
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			mimeType, err := detectFileEncoding(&tt.doc)
			if (err != nil) != tt.wantErr {
				t.Errorf("detectFileEncoding() error = %v, wantErr %v", err, tt.wantErr)
			}
			if mimeType != tt.wantMimeType {
				t.Errorf("detectFileEncoding() incorrect mimeType = %v", mimeType)
			}
		})
	}
}
